Constructing Triangles Flashcards
To construct a triangle given 3 sides
AB = 8 cm, BC = 5 cm and AC = 6 cm
What is the first step?
Sketch the triangle
To construct a triangle given 3 sides
AB = 8 cm, BC = 5 cm and AC = 6 cm
What is the second step?
Draw a line AB = 8 cm
To construct a triangle given 3 sides
AB = 8 cm, BC = 5 cm and AC = 6 cm
What is the third step?
Use compasses to draw 2 arcs,
6 cm form A
5 cm from B
Where the arcs intersect, label that point C
To construct a triangle given 3 sides
AB = 8 cm, BC = 5 cm and AC = 6 cm
What is the fourth step?
Join AC and BC
To construct a triangle given 2 sides and the angle in between
DE = 6 cm, DF = 5 cm and angle FDE = 60º
What is the first step?
Sketch the triangle
To construct a triangle given 2 sides and the angle in between
DE = 6 cm, DF = 5 cm and angle FDE = 60º
What is the second step?
Draw DE = 6 cm
To construct a triangle given 2 sides and the angle in between
DE = 6 cm, DF = 5 cm and angle FDE = 60º
What is the third step?
Use a protractor and draw angle angle FDE = 60º
To construct a triangle given 2 sides and the angle in between
DE = 6 cm, DF = 5 cm and angle FDE = 60º
What is the fourth step?
Use compass to mark F such that DF = 5 cm
To construct a triangle given 2 sides and the angle in between
DE = 6 cm, DF = 5 cm and angle FDE = 60º
What is the fifth step?
Draw EF
To construct a triangle given 2 angles and the side in between
XY = 5 cm, Angle X = 80º and angle Y = 70º
What is the first step?
Sketch the triangle to give you an idea what it will look like
To construct a triangle given 2 angles and the side in between
XY = 5 cm, Angle X = 80º and angle Y = 70º
What is the second step?
Draw XY = 5 cm
To construct a triangle given 2 angles and the side in between
XY = 5 cm, Angle X = 80º and angle Y = 70º
What is the third step?
Use a protractor to draw both angles.
To construct a triangle given 2 angles and the side in between
XY = 5 cm, Angle X = 80º and angle Y = 70º
What is the fourth step?
Extend the line until both lines meet.
label the intersecting point Z
To construct a triangle given 2 sides and the angle that is not between the 2 sides
PR = 7 cm, PQ = 5 cm and angle Q = 100º
What is the first step?
Sketch the triangle to give you an idea what it will look like
To construct a triangle given 2 sides and the angle that is not between the 2 sides
PR = 7 cm, PQ = 5 cm and angle Q = 100º
What is the second step?
Draw PQ = 5 cm
To construct a triangle given 2 sides and the angle that is not between the 2 sides
PR = 7 cm, PQ = 5 cm and angle Q = 100º
What is the third step?
Use a protractor to draw angle Q = 100º
Use compass to mark R such that PR = 7 cm
To construct a triangle given 2 sides and the angle that is not between the 2 sides
PR = 7 cm, PQ = 5 cm and angle Q = 100º
What is the fourth step?
Draw PR
